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webgl_buffergeometry_lines.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - buffergeometry - lines</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="container"></div>
<div id="info"><a href="https://www.soft8soft.com/verge3d" target="_blank" rel="noopener">Verge3D</a> webgl - buffergeometry - lines</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"v3d": "../build/v3d.module.js",
"v3d/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as v3d from 'v3d';
import Stats from 'v3d/addons/libs/stats.module.js';
let container, stats, clock;
let camera, scene, renderer;
let line;
const segments = 10000;
const r = 800;
let t = 0;
init();
animate();
function init() {
container = document.getElementById('container');
//
camera = new v3d.PerspectiveCamera(27, window.innerWidth / window.innerHeight, 1, 4000);
camera.position.z = 2750;
scene = new v3d.Scene();
clock = new v3d.Clock();
const geometry = new v3d.BufferGeometry();
const material = new v3d.LineBasicMaterial({ vertexColors: true });
const positions = [];
const colors = [];
for (let i = 0; i < segments; i++) {
const x = Math.random() * r - r / 2;
const y = Math.random() * r - r / 2;
const z = Math.random() * r - r / 2;
// positions
positions.push(x, y, z);
// colors
colors.push((x / r) + 0.5);
colors.push((y / r) + 0.5);
colors.push((z / r) + 0.5);
}
geometry.setAttribute('position', new v3d.Float32BufferAttribute(positions, 3));
geometry.setAttribute('color', new v3d.Float32BufferAttribute(colors, 3));
generateMorphTargets(geometry);
geometry.computeBoundingSphere();
line = new v3d.Line(geometry, material);
scene.add(line);
//
renderer = new v3d.WebGLRenderer();
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.outputEncoding = v3d.sRGBEncoding;
container.appendChild(renderer.domElement);
//
stats = new Stats();
container.appendChild(stats.dom);
//
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
//
function animate() {
requestAnimationFrame(animate);
render();
stats.update();
}
function render() {
const delta = clock.getDelta();
const time = clock.getElapsedTime();
line.rotation.x = time * 0.25;
line.rotation.y = time * 0.5;
t += delta * 0.5;
line.morphTargetInfluences[0] = Math.abs(Math.sin(t));
renderer.render(scene, camera);
}
function generateMorphTargets(geometry) {
const data = [];
for (let i = 0; i < segments; i++) {
const x = Math.random() * r - r / 2;
const y = Math.random() * r - r / 2;
const z = Math.random() * r - r / 2;
data.push(x, y, z);
}
const morphTarget = new v3d.Float32BufferAttribute(data, 3);
morphTarget.name = 'target1';
geometry.morphAttributes.position = [morphTarget];
}
</script>
</body>
</html>